21192215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{509}}^1\times {\mathrm{757}}^1$

素因数の和:1282

約数の個数: 16

約数和(自身を含む): 27833760

約数和(自身を除く): 6641545

約数列:

[1, 5, 11, 55, 509, 757, 2545, 3785, 5599, 8327, 27995, 41635, 385313, 1926565, 4238443, 21192215]

約数ペア:

[(1, 21192215), (5, 4238443), (11, 1926565), (55, 385313), (509, 41635), (757, 27995), (2545, 8327), (3785, 5599)]